[CASSANDRA-11255] COPY TO should have higher double precision

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.6
• Component/s: Legacy/Tools
• Labels: doc-impacting lhf
• Assignee: Stefania Alborghetti
• Reporter: Stefania Alborghetti

Authors

Stefania Alborghetti

Reviewers

Sylvain Lebresne

• Created: 26/Feb/16 03:22
• Updated: 16/Apr/19 09:30
• Resolved: 18/Mar/16 09:57

Description

At the moment COPY TO uses the same float precision as cqlsh, which by default is 5 but it can be changed in cqlshrc. However, typically people want to preserve precision when exporting data and so this default is too low for COPY TO.

I suggest adding a new COPY FROM option to specify floating point precision with a much higher default value, for example 12.

Issue Links

• is related to: CASSANDRA-11053 COPY FROM on large datasets: fix progress report and optimize performance part 4